December weather forecastRoyalton, PA
December
Weather in December
The first month of the winter, December, is also a wintry month in Royalton, Pennsylvania, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 41°F (5°C).Temperature
Royalton's progression into December includes a drop in the average high-temperature, from a fresh 50°F (10°C) in November to a wintry 41°F (5°C). Throughout the month of December, Royalton witnesses an average temperature of 29.7°F (-1.3°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Royalton, in December, it is raining for 10.1 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, in Royalton, there are 160.1 rainfall days, and 30.75" (781mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Royalton, Pennsylvania, in December, during 3.9 snowfall days, 1.42" (36mm) of snow is typically accumulated. In Royalton, during the entire year, snow falls for 21.1 days and aggregates up to 11.06" (281mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:51 pm EST.
Sunshine
In Royalton, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Royalton, PA
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Royalton, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Royalton, PA
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are February and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Royalton, PA
- Average humidity in December: 79%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Royalton, PA
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is August (3.46").
The driest months (with the least rainfall) are January and February (1.97").
Average rainfall days in December
Royalton, PA
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Royalton, PA
- Average snowfall in December: 1.42"
The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Royalton, PA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Royalton, PA
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Royalton, PA
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10 days).
Average UV index in December
Royalton, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Royalton, PA
- Average cloud cover in December: 49
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Royalton, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
